You only need 20% to qualify, along with a credit score typically north of 660.

What's the lowest credit score you will allow?

The tenant-friendly laws leave a landlord with too much risk on tenants with FICO scores under 660. 

We have an incredibly high customer satisfaction score from investors stating that the agents are providing education and great details about their market all while helping them to close deals faster.

The percentage of the projected AirDNA revenue will depend on your experience and credit score.

If you have enough properties, you can ride a tenant issue with the other properties covering the cash flow/expenses of the bad tenant--especially if you have professional tenants who care about their credit score. 

:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

It gives you a livability score and its a good way to gage different areas and what they are like. 

Someone that is more aggressive, may want lesser even though skin in the game.

Quote from @Mei Zhu: Transunion Smart Move has an online application and screening that I recommend.Whichever you decide, make sure they provide a full credit report, not just a score.